1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "Test.h" 9 #if SK_SUPPORT_GPU 10 #include "GrContext.h" 11 #include "GrDrawContext.h" 12 #include "gl/GrGLGpu.h" 13 #include "gl/GrGLUtil.h" 14 #include "gl/SkGLContext.h" 15 16 static void test_read_pixels(skiatest::Reporter* reporter, GrContext* context, 17 GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) { 18 int pixelCnt = rectangleTexture->width() * rectangleTexture->height(); 19 SkAutoTMalloc<uint32_t> pixels(pixelCnt); 20 memset(pixels.get(), 0, sizeof(uint32_t)*pixelCnt); 21 bool read = rectangleTexture->readPixels(0, 0, rectangleTexture->width(), 22 rectangleTexture->height(), kRGBA_8888_GrPixelConfig, 23 pixels.get()); 24 if (!read) { 25 ERRORF(reporter, "Error reading rectangle texture."); 26 } 27 for (int i = 0; i < pixelCnt; ++i) { 28 if (pixels.get()[i] != expectedPixelValues[i]) { 29 ERRORF(reporter, "Error, rectangle texture pixel value %d should be 0x%08x," 30 " got 0x%08x.", i, expectedPixelValues[i], pixels.get()[i]); 31 break; 32 } 33 } 34 } 35 36 static void test_write_pixels(skiatest::Reporter* reporter, GrContext* context, 37 GrTexture* rectangleTexture) { 38 int pixelCnt = rectangleTexture->width() * rectangleTexture->height(); 39 SkAutoTMalloc<uint32_t> pixels(pixelCnt); 40 for (int y = 0; y < rectangleTexture->width(); ++y) { 41 for (int x = 0; x < rectangleTexture->height(); ++x) { 42 pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(x, y, x + y, x * y); 43 } 44 } 45 bool write = rectangleTexture->writePixels(0, 0, rectangleTexture->width(), 46 rectangleTexture->height(), kRGBA_8888_GrPixelConfig, 47 pixels.get()); 48 if (!write) { 49 ERRORF(reporter, "Error writing to rectangle texture."); 50 } 51 test_read_pixels(reporter, context, rectangleTexture, pixels.get()); 52 } 53 54 static void test_copy_surface_src(skiatest::Reporter* reporter, GrContext* context, 55 GrTexture* rectangleTexture, uint32_t expectedPixelValues[]) { 56 GrSurfaceDesc copyDstDesc; 57 copyDstDesc.fConfig = kRGBA_8888_GrPixelConfig; 58 copyDstDesc.fWidth = rectangleTexture->width(); 59 copyDstDesc.fHeight = rectangleTexture->height(); 60 copyDstDesc.fFlags = kRenderTarget_GrSurfaceFlag; 61 SkAutoTUnref<GrTexture> dst(context->textureProvider()->createTexture( 62 copyDstDesc, SkBudgeted::kYes)); 63 context->copySurface(dst, rectangleTexture); 64 test_read_pixels(reporter, context, dst, expectedPixelValues); 65 } 66 67 static void test_copy_surface_dst(skiatest::Reporter* reporter, GrContext* context, 68 GrTexture* rectangleTexture) { 69 int pixelCnt = rectangleTexture->width() * rectangleTexture->height(); 70 SkAutoTMalloc<uint32_t> pixels(pixelCnt); 71 for (int y = 0; y < rectangleTexture->width(); ++y) { 72 for (int x = 0; x < rectangleTexture->height(); ++x) { 73 pixels.get()[y * rectangleTexture->width() + x] = GrColorPackRGBA(y, x, x * y, x *+ y); 74 } 75 } 76 77 GrSurfaceDesc copySrcDesc; 78 copySrcDesc.fConfig = kRGBA_8888_GrPixelConfig; 79 copySrcDesc.fWidth = rectangleTexture->width(); 80 copySrcDesc.fHeight = rectangleTexture->height(); 81 copySrcDesc.fFlags = kRenderTarget_GrSurfaceFlag; 82 SkAutoTUnref<GrTexture> src(context->textureProvider()->createTexture( 83 copySrcDesc, SkBudgeted::kYes, pixels.get(), 0)); 84 85 context->copySurface(rectangleTexture, src); 86 test_read_pixels(reporter, context, rectangleTexture, pixels.get()); 87 } 88 89 static void test_clear(skiatest::Reporter* reporter, GrContext* context, 90 GrTexture* rectangleTexture) { 91 if (rectangleTexture->asRenderTarget()) { 92 SkAutoTUnref<GrDrawContext> dc(context->drawContext(rectangleTexture->asRenderTarget())); 93 if (!dc) { 94 ERRORF(reporter, "Could not get GrDrawContext for rectangle texture."); 95 return; 96 } 97 98 // Clear the whole thing. 99 GrColor color0 = GrColorPackRGBA(0xA, 0xB, 0xC, 0xD); 100 dc->clear(nullptr, color0, false); 101 102 int w = rectangleTexture->width(); 103 int h = rectangleTexture->height(); 104 int pixelCnt = w * h; 105 SkAutoTMalloc<uint32_t> expectedPixels(pixelCnt); 106 107 // The clear color is a GrColor, our readback is to kRGBA_8888, which may be different. 108 uint32_t expectedColor0 = 0; 109 uint8_t* expectedBytes0 = SkTCast<uint8_t*>(&expectedColor0); 110 expectedBytes0[0] = GrColorUnpackR(color0); 111 expectedBytes0[1] = GrColorUnpackG(color0); 112 expectedBytes0[2] = GrColorUnpackB(color0); 113 expectedBytes0[3] = GrColorUnpackA(color0); 114 for (int i = 0; i < rectangleTexture->width() * rectangleTexture->height(); ++i) { 115 expectedPixels.get()[i] = expectedColor0; 116 } 117 118 // Clear the the top to a different color. 119 GrColor color1 = GrColorPackRGBA(0x1, 0x2, 0x3, 0x4); 120 SkIRect rect = SkIRect::MakeWH(w, h/2); 121 dc->clear(&rect, color1, false); 122 123 uint32_t expectedColor1 = 0; 124 uint8_t* expectedBytes1 = SkTCast<uint8_t*>(&expectedColor1); 125 expectedBytes1[0] = GrColorUnpackR(color1); 126 expectedBytes1[1] = GrColorUnpackG(color1); 127 expectedBytes1[2] = GrColorUnpackB(color1); 128 expectedBytes1[3] = GrColorUnpackA(color1); 129 130 for (int y = 0; y < h/2; ++y) { 131 for (int x = 0; x < w; ++x) { 132 expectedPixels.get()[y * h + x] = expectedColor1; 133 } 134 } 135 136 test_read_pixels(reporter, context, rectangleTexture, expectedPixels.get()); 137 } 138 } 139 140 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(RectangleTexture, reporter, context, glContext) { 141 static const int kWidth = 13; 142 static const int kHeight = 13; 143 144 GrColor pixels[kWidth * kHeight]; 145 for (int y = 0; y < kHeight; ++y) { 146 for (int x = 0; x < kWidth; ++x) { 147 pixels[y * kWidth + x] = y * kWidth + x; 148 } 149 } 150 151 for (int origin = 0; origin < 2; ++origin) { 152 GrGLuint rectTexID = glContext->createTextureRectangle(kWidth, kHeight, GR_GL_RGBA, 153 GR_GL_RGBA, GR_GL_UNSIGNED_BYTE, 154 pixels); 155 156 if (!rectTexID) { 157 return; 158 } 159 160 // Let GrContext know that we messed with the GL context directly. 161 context->resetContext(); 162 163 // Wrap the rectangle texture ID in a GrTexture 164 GrGLTextureInfo rectangleInfo; 165 rectangleInfo.fID = rectTexID; 166 rectangleInfo.fTarget = GR_GL_TEXTURE_RECTANGLE; 167 168 GrBackendTextureDesc rectangleDesc; 169 rectangleDesc.fFlags = kRenderTarget_GrBackendTextureFlag; 170 rectangleDesc.fConfig = kRGBA_8888_GrPixelConfig; 171 rectangleDesc.fWidth = kWidth; 172 rectangleDesc.fHeight = kHeight; 173 rectangleDesc.fOrigin = origin ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin; 174 rectangleDesc.fTextureHandle = reinterpret_cast<GrBackendObject>(&rectangleInfo); 175 176 GrColor refPixels[kWidth * kHeight]; 177 bool flipRef = rectangleDesc.fOrigin == kBottomLeft_GrSurfaceOrigin; 178 for (int y = 0; y < kHeight; ++y) { 179 for (int x = 0; x < kWidth; ++x) { 180 int y0 = flipRef ? kHeight - y - 1 : y; 181 refPixels[y * kWidth + x] = pixels[y0 * kWidth + x]; 182 } 183 } 184 185 SkAutoTUnref<GrTexture> rectangleTexture( 186 context->textureProvider()->wrapBackendTexture(rectangleDesc)); 187 if (!rectangleTexture) { 188 ERRORF(reporter, "Error wrapping rectangle texture in GrTexture."); 189 GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID)); 190 continue; 191 } 192 193 test_read_pixels(reporter, context, rectangleTexture, refPixels); 194 195 test_copy_surface_src(reporter, context, rectangleTexture, refPixels); 196 197 test_copy_surface_dst(reporter, context, rectangleTexture); 198 199 test_write_pixels(reporter, context, rectangleTexture); 200 201 test_clear(reporter, context, rectangleTexture); 202 203 GR_GL_CALL(glContext->gl(), DeleteTextures(1, &rectTexID)); 204 } 205 } 206 207 #endif 208
